Hydrocarbon-burner.



No. 677,899; Pat'ented1u|y 9,|9o|.

v J. C. (SPEIRS. vHYDROJAHBN BURNER.

(Application led Feb. 24, 1900.)

(Na Modal.)

........ fin

. 3 5 l t; E

UNITED STATES' PATENTv FFICE.

JOHN o. sPErRs, OF WORCESTER,MASSACHUSETTS, AssIeNOR To THE LOOOMOBILE COMPANY OF AMERICA, OF NEW YORK, N. Y.

HYDRooARBON-BURNER.

sPEcIrlcATIoN forming 'part of Letters-Patent No. 677,899, dated July 9, 190,1. Application ined February 24, 1900. serial No'. 6,401. (No man.)

To @ZZ whom it may concern:

Be it known that I, JOHN C. SPEIRs, of

Worcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Hydrocar bon-Burners, of which the following is a specication.

This invention relates to h ydrocarbomb u rn'- ers of a type particularly adapted to the heating of boilers, such as those employed on steam driven1 automobile vehicles. These burners commonly employ as fuel the vaporV of a hydrocarbon liquid, such as gasolene, which vapor, mixed With air, supports coinbustion.

My invention has for its object to improve and render more certain the combustion ensuing in burners of Vthis character and to strengthen the burner.

To this end the invention consists inra certain novel feature of construction hereinafter described and claimed.

Of the accompanying drawings, Figure l represents a top plan view of a burner embodying my invention. Fig. 2 represents a vertical sectional View thereof, taken on the line 2 2 of Fig. 1. Fig. 3 represents a detail plan view, enlarged, of a part of the top sheet or Wall of the burner. Fig. 4 represents a sectional view thereof. Fig. 5 represents a similar sectional view including an airtube.

The same reference characters indicate the same parts in all the figures.

Referring to the drawings, l designates a casing of flattened cylindrical form, the interior of which constitutes a mixing-chamber.

2 and 3 designate, respectively, the lower and upper sheets or Walls of the casing l, and 4 4 designate a series of vertical air-fines formed by expanding short cylindrical tubes 6 6 into the Walls or sheets 2 and 3.

Hydrocarbon vapor injected in the form of a jet horizontally into the casing l through an aperture 9, Fig. 2, and drawing a current of air in with it becomes intermixed with the air in the casing, and the mixture issues through a number of small perforations 8 8, extending through the upper Wall 3 and surrounding each air-line 4 in an annular series. A short distance above the surface of the burner the Vapor issuing through the perforations S receives an additional admixture of air from the air-dues 4, and combustion enf sues.

5 is a protective gratingcovering the lower ends of the air-fines 4.

Heretofore it has been the practice to make the upper sheet or Wall of the casing l per fectly flat and to form the perforations 8 in this fiat surface. The upper orifices of the air-fines Were then of uniform diameter with the whole iiue. It has been found in practice that the upward air-currents issuing through these cylindrical orices have atendency to spread or diverge to an extent which interferes with combustion and sometimes extinguishes the ame entirely. I have succeeded in overcoming this defect by extending the air-fines a short distance above the termination of the tubes Gand forming the extensions into liaring orifices for the air-fines. The air-currents issuing through flaring orifices appear to have a more compact cylindrical form than when they issue through cylindrical orifices. A simple and inexpensive method of provid ing the desired iiaring structure of the airflue orices is by forming an annular raised bead or ridge 7 around the upper end of each air-tube 6, said ridges being stamped in the metal of the upper sheet or Wall 3. The bend in the metal is clearly indicated in Figs. 4 and 5. The perforations 8 8 are made in the crests of the ridges 7 7 and disposed in an annular series around each air-line, as heretofore. The result of this construction, as ascertained in actual practice, is to improve combustion and render its maintenance more certain than heretofore.

I am aware that it is old in a single burner to provide a raised gas-discharging ring surrounding a flaring air-flue. My invention relates, however, to multiple burners having an extensive top sheet made of relatively thin malleable metal which is liable to warp. The corrugations surrounding the numerous air holes or flues in this sheet, besides serving the purpose above named, increase the stiffness of the sheet and prevent it from warping.

I claiml. In a hydrocarbon-burner, a casing constituting a mixing-chamber, a series of tubes traversing said casing and attached to the IOC) which are affixed the upper ends of a series of air iues or tubes, said plate having formed in it a series of raised annular eorrugations or beads surrounding the respective holes and constituting flaring or widened orifiees .for the air-fines, the said corrugatious being formed by foroibie bending or Iiexure of the malleable metal, and each having an annular series of perforations for the escape of gas.

3. A hydrocarbon-burner provided With numerous individual burners and having an extensive top sheet 0r plate common to the individual burners and provided with air-iiue openings, said sheet being composed of malleable metal and having a bend 'or exure surrounding each air-flue opening, and an annular series of perforations formed in the ben-d or iiexure and surrounding the air-flue A opening, for the escape of combustible.

In testimony whereof I have affixed my signature in presence of two Witnesses.

JOHN C. SPEIRS. Witnesses:

H. L. Romains,l A. D. HARRISON. 

